Laser

A Light Matter: Understanding The Raman Dance Of Solids

Scientists investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum interferometry.
Related topics: Semiconductors, Quantum, Physics

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San Francisco Will Soon Have 1,000 Laser-powered Smart Garbage Cans

Keeping streets and sidewalks free of trash is a huge task in any major city. It’s a problem San Francisco hopes to battle by installing a network of high-tech sensors. These sensors, manufactured […] The post San Francisco Will Soon...

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New Data On Ultrafast Electron Photoemission From Metallic Nanostructures Obtained

The results of a Russian-Japanese experiment explain the mechanism of electron photoemission by metallic nanostructures under ultrafast laser excitation. Metallic nanoparticle ensembles are capable of emitting short bunches of electrons when...
Related topics: Electrons

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Quantum Interferometry Reveals The Chosen Pathway Of Coherent Phonon Generation

Scientists at Tokyo Institute of Technology and Keio University investigated the excitation and detection of photogenerated coherent phonons in polar semiconductor GaAs through an ultrafast dual pump-probe laser for quantum interferometry.
Related topics: Quantum, Physics, Semiconductors

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The Ipod Of Vr Is Here, And You Should Try It

Never before have I seen a single technology improve so quickly. Three years ago, I duct-taped a laser tracker to the top of my eminently patient wife’s painting easel. On a converted baker’s cart in the corner, I set up a...

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Room-temperature Polariton Nano-laser

Researchers have developed a polariton nano-laser operating at room temperature.

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New Measurement Device: Carbon Dioxide As Geothermometer

For the first time it is possible to measure, simultaneously and with extreme precision, four rare molecular variants of carbon dioxide using a novel laser instrument. As a new type of geothermometer, the laser-spectroscopy-based measurement device...
Related topics: Carbon Dioxide

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Scientists Develop Polariton Nano-laser Operating At Room Temperature

A room temperature polariton nano-laser has been demonstrated, along with several related research findings, regarding topics such as polariton physics at the nanoscale and also applications in quantum information systems. The research was published...
Related topics: Physics, Quantum

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Yet Another Concrete Speaker Build

Concrete is great if you feel like making something heavy on the cheap. [Marek Unger] decided to have a go, using the material to cast speaker cabinets for a home hi-fi rig (Youtube link, embedded below). Initial attempts involved creating a...
Related topics: Youtube

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Researchers Produce Record-shattering Underwater Sound More Intense Than A Rocket Launch

Researchers have produced a a record-shattering underwater sound with an intensity that eclipses that of a rocket launch while investigating what happens when they blast tiny jets of water with X-ray laser pulses. […] The post Researchers...

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Nissan Follows Tesla’s Lead And Drops Lidar From Autonomous Cars

Nissan has stepped away from using LIDAR in its self-driving car technologies in favour of using a camera-based approach like Tesla.The automaker stated that LIDAR — a laser-based radar system — is too expensive to use considering the...
Related topics: Tesla

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Ultra-clean Fabrication Platform Produces Nearly Ideal 2-d Transistors

Semiconductors, which are the basic building blocks of transistors, microprocessors, lasers, and LEDs, have driven advances in computing, memory, communications, and lighting technologies since the mid-20th century. Recently discovered...
Related topics: Semiconductors

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Accelerating Quantum Technologies With Materials Processing At The Atomic Scale

An emerging suite of information technologies based on fundamental quantum physics has been given a boost by researchers who have invented a method to engineer single atomic defects in diamond using laser processing.
Related topics: Quantum, Physics

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Prototyping Pcbs With Electrical Discharge Machining

Here at Hackaday, we thought we’d seen every method of making PCBs: CNC machining, masking and etching with a variety of chemicals, laser engraving, or even the crude but effective method of scratching away the copper with a utility knife....

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If You Don’t Need Bells And Whistles, This $90 Robot Vacuum Is Terrific

Believe it or not, you can actually spend up to $1,000 on a robot vacuum. These little devices are definitely nice to have, but that’s a lot of money to spend on a vacuum. If you can forgo more advanced features like auto-docking and laser...
Related topics: Robots

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Copper Oxide Photocathodes: Laser Experiment Reveals Location Of Efficiency Loss

Solar cells and photocathodes made of copper oxide could theoretically attain high efficiencies for solar energy conversion. In practice, however, large losses occur. Now, a team at the HZB has been able to use a sophisticated femtosecond laser...
Related topics: Solar Power

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Scientists Used Lasers To Reproduce Exotic Ice That Might Fill Uranus

Earth orbits the Sun at a distance that allows both liquid water and water ice to exist on its surface in ample amounts. We like to think we're pretty familiar with the various forms water can take, but new research suggests that water ice on Uranus...
Related topics: Sun

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In The Claws Of A Vulture: Nebra Anybeam Laser Projector

Is that a laser projector in your pocket or are you, er, just going camping? Those seeking a bit of portable projector fun will shortly have a tiny option in the form of the Nebra AnyBeam, a pocket-sized laser for flinging images onto a handy...

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Raytheon Shoots Down Multiple Drones With Directed Laser Weapon

Raytheon Company has successfully shot down multiple drones using its advanced high powered microwave (HPM) and mobile high energy laser (HEL) weapon systems, stated the company press release Tuesday. The directed-energy weapon system was paired...
Related topics: Drones, Microwaves

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Waymo Defends Laser Sensors After Elon Musk Drags Them

Tesla CEO Elon Musk's recent strongly worded thoughts on LiDAR laser sensors, which bring 3D imaging to a self-driving car's computer, are still reverberating throughout the autonomous vehicle community. Waymo's head engineers and scientists are now...
Related topics: Tesla

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